If the stiffness matrix of the beam element is given as \(\frac{{2EI}}{L}\left[ {\begin{array}{*{20}{c}} 2&{ - 1}\\ { - 1}&2 \end{array}} \right]\)then the flexibility matrix is

\(\frac{L}{{2EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)

\(\frac{L}{{6EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)

\(\frac{L}{{3EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)

\(\frac{L}{{6EI}}\;\left[ {\begin{array}{*{20}{c}} { - 1}&2\\ 2&{ - 1} \end{array}} \right]\)

If the stiffness matrix of the beam element is given as \(\frac{{2EI}

1.	If the stiffness matrix of the beam element is given as \(\frac{{2EI}}{L}\left[ {\begin{array}{*{20}{c}} 2&{ - 1}\\ { - 1}&2 \end{array}} \right]\)then the flexibility matrix is
A.	\(\frac{L}{{6EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)
B.	\(\frac{L}{{2EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)
C.	\(\frac{L}{{3EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)
D.	\(\frac{L}{{6EI}}\;\left[ {\begin{array}{*{20}{c}} { - 1}&2\\ 2&{ - 1} \end{array}} \right]\)
Answer» B. \(\frac{L}{{2EI}}\;\left[ {\begin{array}{*{20}{c}} 2&1\\ 1&2 \end{array}} \right]\)